Unit 4: Structural Geology Why Study Change?. What is the Recipe for Soil?  Soil is a mixture of weathered down rock, organic matter, water, living things,

Slides:

Advertisements

Similar presentations

mechanical weathering

Advertisements

Weathering and Soil.

Unit 1 Lesson 5 Soil Formation

Weathering Essential Vocabulary.

Weathering Processes Formation of Soils By Diana L. Duckworth Rustburg High School Campbell County, VA.

Rocks and Weathering Chapter 8.1.

Dirt on Soil. What is Soil? Soil forms as rock is weathered and mixes with other materials on the surface. Soil forms as rock is weathered and mixes with.

The pieces or particles of rock (large and small)… ADD HERE

Weathering & Soils Mr. Manzo.

Weathering & Soil.

Weathering & Erosion.

Weathering and Erosion

Weatheri ng Weathering is the physical and chemical breakdown of rocks at the Earth’s surface. The pieces or particles of rock (large and small) that are.

WEATHERING AND EROSION. WEATHERING Weathering is a type of erosion. Weathering happens when rocks are exposed to… – Atmosphere – Hydrosphere – Living.

DO Now: You find a sedimentary rock that has one graded bed. Describe how you know which layer of the graded bed is formed last?

Chapter 7: Weathering & Soil

Weathering and Erosion Weathering means the process of breaking down rocks and other substances at Earth’s surface.

Weathering, Erosion, and Soil

Soil Soil is made of A. weathered rock/ sediments

The Earth’s Changing Surface

Soil & Weathering.  The breakdown of materials of Earth’s crust into smaller pieces. Weathering.

Chapter 7- Weathering, Erosion and Soil

Chapter 14 Weathering and Erosion

By: Kelsey Bowman and Tiffany Gee

Chapter 6 Weathering and Soil

200 pt 300 pt 400 pt 500 pt 100 pt 200 pt 300 pt 400 pt 500 pt 100 pt 200pt 300 pt 400 pt 500 pt 100 pt 200 pt 300 pt 400 pt 500 pt 100 pt 200 pt 300 pt.

Weathering and Soil Erosion

The Ground Beneath Our Feet. What Makes Up Healthy Soil? Mineral fragments, humus, air, water, and living things – Plant roots, Insects, Worms Humus –

Weathering, Soil, and Erosion Chapter 5. Weathering  Def: the breakup of rock due to exposure to processes that occur at Earth’s surface  2 types: 

Aim: What is weathering ? I. Weathering – the breakup of rock due to exposure to the atmosphere. A. Erosion – is the removal and transport of earth materials.

Weathering and Soil Formation

SOILS & SOIL TYPES. What is soil? Soil is one of the basic resources we need to survive – like air and water. the surface layer of the Earth that contains.

Weathering and Erosion

Do Now: What processes creates the small rocks in soil? List what else you might can find in soil. AIM: What is Soil?

The speed rocks weather depends on a few factors… check em out.

Weathering and Erosion Natures way of tearing down everything that has been built up over billions of years.

Weathering, Erosion, Deposition, and Landscapes

Chapter 4 Weathering and Soil Formation. Weathering breaks down rocks into smaller pieces 1. Mechanical weathering 2. Chemical weathering Weathering breaks.

Aim: How do soils form? I. Soil – mixture of weathered rock and organic remains that usually covers bedrock. A. Formed as a result of both physical and.

Do Now: What processes creates the small rocks in soil? Describe what else you can find in soil. AIM: What is Soil?

CH 12 Weathering, Soil, Mass Movements (Gravity) Earth’s surface is constantly changing. Earth’s surface is constantly changing. Weathering = breaking.

 The process by which natural forces break down rocks.  There are two types Mechanical Weathering (Broken Apart) Chemical Weathering (Chemical Reaction.

Rate of Weathering and Soil Formation Ch. 10, section 2 and 3.

Weathering, Soil, and Erosion Chapter 5. Weathering  Def: the breakup of rock due to exposure to processes that occur at Earth’s surface  2 types: 

Weathering & Erosion Weathering & Erosion. Weathering and Erosion Weathering is the break down of rocks that have been exposed to the atmosphere Once.

Weathering and Erosion

Are these examples of weathering, erosion, or both?  1. Ice breaking rock  2. Wind breaking away and moving rock  3. A river moving sediment  4. Tree.

Frost Heaving. Plant Roots (Root Pry) Talus Water.

Weathering  It is surface processes that break down rock  Breaks rocks into smaller and smaller pieces  Ex.) Sand, silt, clay  The formation of soil.

Weathering and Soil Formation. What is weathering?

Weathering Weathering- the breaking down of rock due to physical and chemical changes at the earth ’ s surface.

Weathering The breakdown of rocks into small particles at the Earth’s surface.

HOW SOIL FORMS 6.E.2.3 Explain how the formation of soil is related to the parent rock type and the environment in which it.

Weatheringand Soil Formation. Rocks and Weathering.

Soil Formation and Composition.  I. Soil Formation –A. When bedrock is exposed, it weathers. –B. Particles of rock mix with other material. –C. Soil.

Rocks and Weathering Chapter 8.1.

Weathering, Erosion, and Deposition

Rock Cycle Unit 3 – What is weathering

Weathering and Erosion

Weathering Weathering is the physical and chemical breakdown of rocks at the Earth’s surface. The pieces or particles of rock (large and small) that are.

Weathering and Soil Chapter 7.

Weathering and Soil Information

5.2: Soil regolith: layer of rock and mineral fragments created from weathering soil: part of regolith that can support plant life.

Weathering and Erosion

Chap 10, Sec 3 (From Bedrock to Soil)

Presentation transcript:

Unit 4: Structural Geology Why Study Change?

What is the Recipe for Soil?  Soil is a mixture of weathered down rock, organic matter, water, living things, and a few other assorted things.

Soil is Formed in Stages: I. Stage I: Weather rock down into small particles that are sand-sized or smaller. Weathering – the process of breaking down rock either chemically or physically. Physical Weathering: Breaking a rock down without changing what it is. You have smaller pieces of the same rock. Chemical Weathering: Breaking a rock down and changing it into a completely new substance in the process. For example: iron + water = iron oxide (rust)

What Forces Weather Rock?  The action of water on Earth’s surface, such as rain, waves, rivers, streams, etc. *Moving water is the greatest agent of weathering on Earth’s surface!  The action of tree roots  Animals burrowing underground  Frost Action  Chemical reaction with acid rainwater  Human actions

Factors Controlling Weathering Rate and Time: I. Climate:

Climate and Weathering:  The type of climate you live in will affect the type of weathering that breaks down the rocks.  PHYSICAL WEATHERING will prevail in cold, dry climates.  CHEMICAL WEATHERING will prevail in warm and humid climates. WHAT TYPE OF WEATHERING WILL DOMINATE IN OUR CLIMATE?????

II. Mineral Composition:  Rocks made of harder minerals will be more resistant to weathering and will not break down easily.  Rocks composed of softer minerals will be less resistant to weathering and will break down quickly. Granite Limestone

III. Exposed Surface Area  A rock that is broken into smaller pieces will weather faster than a rock that is whole because there is more surface area exposed to be weathered.

Soil Horizons: A typical soil profile will show three distinct layers, or horizons: I. A -Horizon – also called topsoil, it is the upper layer of soil that contains lots of organic matter (humus), living things, and plant roots. It is rich in nutrients and dark in color due to the large amount of organic matter present in the soil.

II. B-Horizon: The middle layer of soil. It is lighter in color because it has less organic matter (humus). It has fewer plant roots, insects and animals, and has minerals mainly leached out of the A-horizon by rainwater. III. C-Horizon: The bottom layer of soil. It contains broken rock in various stages of weathering. Little to no organic matter or nutrients are present here. ***Solid Bedrock is Found Below the C- Horizon!

A Typical Soil Profile: